'\" te
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.TH CSX_MODIFYCONFIGURATION 9F "Jul 19, 1996"
.SH NAME
csx_ModifyConfiguration \- modify socket and PC Card Configuration Register
.SH SYNOPSIS
.nf
#include <sys/pccard.h>



\fBint32_t\fR \fBcsx_ModifyConfiguration\fR(\fBclient_handle_t\fR \fIch\fR, \fBmodify_config_t *\fR\fImc\fR);
.fi

.SH INTERFACE LEVEL
illumos \fBDDI \fRSpecific (illumos \fBDDI) \fR
.SH PARAMETERS
.ne 2
.na
\fB\fIch\fR \fR
.ad
.RS 7n
Client handle returned from \fBcsx_RegisterClient\fR(9F).
.RE

.sp
.ne 2
.na
\fB\fImc\fR \fR
.ad
.RS 7n
Pointer to a \fBmodify_config_t\fR structure.
.RE

.SH DESCRIPTION
This function allows a socket and \fBPC \fRCard configuration to be modified.
This function can only modify a configuration requested via
\fBcsx_RequestConfiguration\fR(9F).
.SH STRUCTURE MEMBERS
The structure members of \fBmodify_config_t\fR are:
.sp
.in +2
.nf
uint32_t     Socket;        /* socket number */
uint32_t     Attributes;    /* attributes to modify */
uint32_t     Vpp1;          /* Vpp1 value */
uint32_t     Vpp2;          /* Vpp2 value */
.fi
.in -2

.sp
.LP
The fields are defined as follows:
.sp
.ne 2
.na
\fB\fBSocket\fR \fR
.ad
.RS 15n
Not used in illumos, but for portability with other Card Services
implementations, it should be set to the logical socket number.
.RE

.sp
.ne 2
.na
\fB\fBAttributes\fR \fR
.ad
.RS 15n
This field is bit-mapped. The following bits are defined:
.sp
.ne 2
.na
\fBCONF_ENABLE_IRQ_STEERING\fR
.ad
.RS 28n
Enable IRQ steering. Set to connect the \fBPC \fRCard \fBIREQ \fRline to a
previously selected system interrupt.
.RE

.sp
.ne 2
.na
\fBCONF_IRQ_CHANGE_VALID\fR
.ad
.RS 28n
IRQ change valid. Set to request the \fBIRQ \fRsteering enable to be changed.
.RE

.sp
.ne 2
.na
\fBCONF_VPP1_CHANGE_VALID\fR
.ad
.RS 28n
Vpp1 change valid. These bits are set to request a change to the corresponding
voltage level for the \fBPC \fRCard.
.RE

.sp
.ne 2
.na
\fBCONF_VPP2_CHANGE_VALID\fR
.ad
.RS 28n
Vpp2 change valid. These bits are set to request a change to the corresponding
voltage level for the \fBPC \fRCard.
.RE

.sp
.ne 2
.na
\fBCONF_VSOVERRIDE\fR
.ad
.RS 28n
Override VS pins. For Low Voltage keyed cards, must be set if a client desires
to apply a voltage inappropriate for this card to any pin. After card insertion
and prior to the first \fBcsx_RequestConfiguration\fR(9F) call for this client,
the voltage levels applied to the card will be those specified by the Card
Interface Specification. (See \fBWARNINGS\fR.)
.RE

.RE

.sp
.ne 2
.na
\fB\fBVpp1\fR, \fBVpp2\fR\fR
.ad
.RS 15n
Represent voltages expressed in tenths of a volt. Values from \fB0\fR to
\fB25.5\fR volts may be set. To be valid, the exact voltage must be available
from the system. To be compliant with the \fIPC Card 95 Standard,
PCMCIA/JEIDA\fR, systems must always support \fB5.0\fR volts for both \fBVcc\fR
and \fBVpp\fR. (See \fBWARNINGS\fR.)
.RE

.SH RETURN VALUES
.ne 2
.na
\fB\fBCS_SUCCESS\fR \fR
.ad
.RS 28n
Successful operation.
.RE

.sp
.ne 2
.na
\fB\fBCS_BAD_HANDLE\fR \fR
.ad
.RS 28n
Client handle is invalid or \fBcsx_RequestConfiguration\fR(9F) not done.
.RE

.sp
.ne 2
.na
\fB\fBCS_BAD_SOCKET\fR \fR
.ad
.RS 28n
Error getting/setting socket hardware parameters.
.RE

.sp
.ne 2
.na
\fB\fBCS_BAD_VPP\fR \fR
.ad
.RS 28n
Requested \fBVpp\fR is not available on socket.
.RE

.sp
.ne 2
.na
\fB\fBCS_NO_CARD\fR \fR
.ad
.RS 28n
No \fBPC \fRCard in socket.
.RE

.sp
.ne 2
.na
\fB\fBCS_UNSUPPORTED_FUNCTION\fR \fR
.ad
.RS 28n
No \fBPCMCIA \fRhardware installed.
.RE

.SH CONTEXT
This function may be called from user or kernel context.
.SH SEE ALSO
.BR csx_RegisterClient (9F),
.BR csx_ReleaseConfiguration (9F),
.BR csx_ReleaseIO (9F),
.BR csx_ReleaseIRQ (9F),
.BR csx_RequestConfiguration (9F),
.BR csx_RequestIO (9F),
.BR csx_RequestIRQ (9F)
.sp
.LP
\fIPC Card 95 Standard, PCMCIA/JEIDA\fR
.SH WARNINGS
.RS +4
.TP
1.
\fBCONF_VSOVERRIDE\fR is provided for clients that have a need to override
the information provided in the CIS. The client must exercise caution when
setting this as it overrides any voltage level protection provided by Card
Services.
.RE
.RS +4
.TP
2.
Using \fBcsx_ModifyConfiguration()\fR to set \fBVpp\fR to \fB0\fR volts may
result in the loss of a \fBPC \fRCard's state. Any client setting \fBVpp\fR to
\fB0\fR volts is responsible for insuring that the \fBPC \fRCard's state is
restored when power is re-applied to the card.
.RE
.SH NOTES
Mapped \fBIO \fRaddresses can only be changed by first releasing the current
configuration and \fBIO \fRresources with \fBcsx_ReleaseConfiguration\fR(9F)
and \fBcsx_ReleaseIO\fR(9F), requesting new \fBIO \fRresources and a new
configuration with \fBcsx_RequestIO\fR(9F), followed by
\fBcsx_RequestConfiguration\fR(9F).
.sp
.LP
\fBIRQ \fRpriority can only be changed by first releasing the current
configuration and \fBIRQ \fRresources with \fBcsx_ReleaseConfiguration\fR(9F)
and \fBcsx_ReleaseIRQ\fR(9F), requesting new \fBIRQ \fRresources and a new
configuration with \fBcsx_RequestIRQ\fR(9F), followed by
\fBcsx_RequestConfiguration\fR(9F).
.sp
.LP
\fBVcc\fR can not be changed using \fBcsx_ModifyConfiguration()\fR. \fBVcc\fR
may be changed by first invoking \fBcsx_ReleaseConfiguration\fR(9F), followed
by \fBcsx_RequestConfiguration\fR(9F) with a new \fBVcc\fR value.
